xmpp: make the hostname configurable

config.toml

@@ -9,6 +9,7 @@ server_name = "irc.localhost"
 listen_on = "127.0.0.1:5222"
 cert = "./certs/xmpp.pem"
 key = "./certs/xmpp.key"
+hostname = "localhost"
 
 [storage]
 db_path = "db.sqlite"

crates/projection-irc/tests/lib.rs

@@ -48,6 +48,31 @@ impl<'a> TestScope<'a> {
         Ok(())
     }
 
+    async fn expect_that(&mut self, validate: impl FnOnce(&str) -> bool) -> Result<()> {
+        let len = tokio::time::timeout(self.timeout, read_irc_message(&mut self.reader, &mut self.buffer)).await??;
+        let msg = std::str::from_utf8(&self.buffer[..len - 2])?;
+        if !validate(msg) {
+            return Err(anyhow!("unexpected message: {:?}", msg));
+        }
+        self.buffer.clear();
+        Ok(())
+    }
+
+    async fn expect_server_introduction(&mut self, nick: &str) -> Result<()> {
+        self.expect(&format!(":testserver 001 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 002 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 003 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(
+            ":testserver 004 {nick} testserver {APP_VERSION} r CFILPQbcefgijklmnopqrstvz"
+        ))
+        .await?;
+        self.expect(&format!(
+            ":testserver 005 {nick} CHANTYPES=# :are supported by this server"
+        ))
+        .await?;
+        Ok(())
+    }
+
     async fn expect_eof(&mut self) -> Result<()> {
         let mut buf = [0; 1];
         let len = tokio::time::timeout(self.timeout, self.reader.read(&mut buf)).await??;
@@ -113,18 +138,7 @@ async fn scenario_basic() -> Result<()> {
     s.send("PASS password").await?;
     s.send("NICK tester").await?;
     s.send("USER UserName 0 * :Real Name").await?;
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -138,6 +152,132 @@ async fn scenario_basic() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn scenario_force_join_msg() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    server.storage.set_password("tester", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester").await?;
+    s2.expect_nothing().await?;
+
+    // We join the channel from the first connection
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester JOIN #test").await?;
+    s1.expect(":testserver 332 tester #test :New room").await?;
+    s1.expect(":testserver 353 tester = #test :tester").await?;
+    s1.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // And the second connection should receive the JOIN message (forced JOIN)
+    s2.expect(":tester JOIN #test").await?;
+    s2.expect(":testserver 332 tester #test :New room").await?;
+    s2.expect(":testserver 353 tester = #test :tester").await?;
+    s2.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // We send a message to the channel from the second connection
+    s2.send("PRIVMSG #test :Hello").await?;
+    // We should not receive an acknowledgement from the server
+    s2.expect_nothing().await?;
+    // But we should receive this message from the first connection
+    s1.expect(":tester PRIVMSG #test :Hello").await?;
+
+    s1.send("QUIT :Leaving").await?;
+    s1.expect(":testserver ERROR :Leaving the server").await?;
+    s1.expect_eof().await?;
+
+    // Closing a connection does not kick you from the channel on a different connection
+    s2.expect_nothing().await?;
+
+    s2.send("QUIT :Leaving").await?;
+    s2.expect(":testserver ERROR :Leaving the server").await?;
+    s2.expect_eof().await?;
+
+    stream1.shutdown().await?;
+    stream2.shutdown().await?;
+
+    // wrap up
+
+    server.server.terminate().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_two_users() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester1").await?;
+    server.storage.set_password("tester1", "password").await?;
+    server.storage.create_user("tester2").await?;
+    server.storage.set_password("tester2", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester1").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester1").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester2").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester2").await?;
+    s2.expect_nothing().await?;
+
+    // Join the channel from the first user
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester1 JOIN #test").await?;
+    s1.expect(":testserver 332 tester1 #test :New room").await?;
+    s1.expect(":testserver 353 tester1 = #test :tester1").await?;
+    s1.expect(":testserver 366 tester1 #test :End of /NAMES list").await?;
+    // Then join the channel from the second user
+    s2.send("JOIN #test").await?;
+    s2.expect(":tester2 JOIN #test").await?;
+    s2.expect(":testserver 332 tester2 #test :New room").await?;
+    s2.expect_that(|msg| {
+        msg == ":testserver 353 tester2 = #test :tester1 tester2"
+            || msg == ":testserver 353 tester2 = #test :tester2 tester1"
+    })
+    .await?;
+    s2.expect(":testserver 366 tester2 #test :End of /NAMES list").await?;
+    // The first user should receive the JOIN message from the second user
+    s1.expect(":tester2 JOIN #test").await?;
+    s1.expect_nothing().await?;
+    s2.expect_nothing().await?;
+    // Send a message from the second user
+    s2.send("PRIVMSG #test :Hello").await?;
+    // The first user should receive the message
+    s1.expect(":tester2 PRIVMSG #test :Hello").await?;
+    // Leave the channel from the first user
+    s1.send("PART #test").await?;
+    s1.expect(":tester1 PART #test").await?;
+    // The second user should receive the PART message
+    s2.expect(":tester1 PART #test").await?;
+    Ok(())
+}
+
 /*
 IRC SASL doc: https://ircv3.net/specs/extensions/sasl-3.1.html
 AUTHENTICATE doc: https://modern.ircdocs.horse/#authenticate-message
@@ -168,18 +308,7 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -217,18 +346,7 @@ async fn scenario_cap_short_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -272,18 +390,7 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
+    s.expect_server_introduction("tester").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;

crates/projection-xmpp/src/iq.rs

@@ -4,7 +4,7 @@ use quick_xml::events::Event;
 
 use lavina_core::room::RoomRegistry;
 use proto_xmpp::bind::{BindResponse, Jid, Name, Resource, Server};
-use proto_xmpp::client::{Iq, IqType};
+use proto_xmpp::client::{Iq, IqError, IqErrorType, IqType};
 use proto_xmpp::disco::{Feature, Identity, InfoQuery, Item, ItemQuery};
 use proto_xmpp::roster::RosterQuery;
 use proto_xmpp::session::Session;
@@ -25,7 +25,7 @@ impl<'a> XmppConnection<'a> {
                     r#type: IqType::Result,
                     body: BindResponse(Jid {
                         name: Some(Name("darova".into())),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
                         resource: Some(Resource("kek".into())),
                     }),
                 };
@@ -52,7 +52,7 @@ impl<'a> XmppConnection<'a> {
                 req.serialize(output);
             }
             IqClientBody::DiscoInfo(info) => {
-                let response = disco_info(iq.to.as_deref(), &info);
+                let response = self.disco_info(iq.to.as_deref(), &info);
                 let req = Iq {
                     from: iq.to,
                     id: iq.id,
@@ -63,7 +63,7 @@ impl<'a> XmppConnection<'a> {
                 req.serialize(output);
             }
             IqClientBody::DiscoItem(item) => {
-                let response = disco_items(iq.to.as_deref(), &item, self.rooms).await;
+                let response = self.disco_items(iq.to.as_deref(), &item, self.rooms).await;
                 let req = Iq {
                     from: iq.to,
                     id: iq.id,
@@ -79,19 +79,21 @@ impl<'a> XmppConnection<'a> {
                     id: iq.id,
                     to: None,
                     r#type: IqType::Error,
-                    body: (),
+                    body: IqError {
+                        r#type: IqErrorType::Cancel,
+                    },
                 };
                 req.serialize(output);
             }
         }
     }
-}
 
-fn disco_info(to: Option<&str>, req: &InfoQuery) -> InfoQuery {
+    fn disco_info(&self, to: Option<&str>, req: &InfoQuery) -> InfoQuery {
         let identity;
         let feature;
+
         match to {
-        Some("localhost") => {
+            Some(r) if r == &*self.hostname => {
                 identity = vec![Identity {
                     category: "server".into(),
                     name: None,
@@ -104,7 +106,7 @@ fn disco_info(to: Option<&str>, req: &InfoQuery) -> InfoQuery {
                     Feature::new("presence"),
                 ]
             }
-        Some("rooms.localhost") => {
+            Some(r) if r == &*self.hostname_rooms => {
                 identity = vec![Identity {
                     category: "conference".into(),
                     name: Some("Chat rooms".into()),
@@ -128,27 +130,27 @@ fn disco_info(to: Option<&str>, req: &InfoQuery) -> InfoQuery {
         }
     }
 
-async fn disco_items(to: Option<&str>, req: &ItemQuery, rooms: &RoomRegistry) -> ItemQuery {
+    async fn disco_items(&self, to: Option<&str>, req: &ItemQuery, rooms: &RoomRegistry) -> ItemQuery {
         let item = match to {
-        Some("localhost") => {
+            Some(r) if r == &*self.hostname => {
                 vec![Item {
                     jid: Jid {
                         name: None,
-                    server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: None,
                     },
                     name: None,
                     node: None,
                 }]
             }
-        Some("rooms.localhost") => {
+            Some(r) if r == &*self.hostname_rooms => {
                 let room_list = rooms.get_all_rooms().await;
                 room_list
                     .into_iter()
                     .map(|room_info| Item {
                         jid: Jid {
                             name: Some(Name(room_info.id.into_inner())),
-                        server: Server("rooms.localhost".into()),
+                            server: Server(self.hostname_rooms.clone()),
                             resource: None,
                         },
                         name: None,
@@ -160,3 +162,4 @@ async fn disco_items(to: Option<&str>, req: &ItemQuery, rooms: &RoomRegistry) ->
         };
         ItemQuery { item }
     }
+}

crates/projection-xmpp/src/lib.rs

@@ -9,7 +9,6 @@ use std::net::SocketAddr;
 use std::path::PathBuf;
 use std::sync::Arc;
 
-use anyhow::anyhow;
 use futures_util::future::join_all;
 use prometheus::Registry as MetricsRegistry;
 use quick_xml::events::{BytesDecl, Event};
@@ -44,6 +43,7 @@ pub struct ServerConfig {
     pub listen_on: SocketAddr,
     pub cert: PathBuf,
     pub key: PathBuf,
+    pub hostname: Str,
 }
 
 struct LoadedConfig {
@@ -117,11 +117,12 @@ pub async fn launch(
                             let players = players.clone();
                             let rooms = rooms.clone();
                             let storage = storage.clone();
+                            let hostname = config.hostname.clone();
                             let terminator = Terminator::spawn(|termination| {
                                 let stopped_tx = stopped_tx.clone();
                                 let loaded_config = loaded_config.clone();
                                 async move {
-                                    match handle_socket(loaded_config, stream, &socket_addr, players, rooms, storage, termination).await {
+                                    match handle_socket(loaded_config, stream, &socket_addr, players, rooms, storage, hostname, termination).await {
                                         Ok(_) => log::info!("Connection terminated"),
                                         Err(err) => log::warn!("Connection failed: {err}"),
                                     }
@@ -156,12 +157,13 @@ pub async fn launch(
 }
 
 async fn handle_socket(
-    config: Arc<LoadedConfig>,
+    cert_config: Arc<LoadedConfig>,
     mut stream: TcpStream,
     socket_addr: &SocketAddr,
     mut players: PlayerRegistry,
     rooms: RoomRegistry,
     mut storage: Storage,
+    hostname: Str,
     termination: Deferred<()>, // TODO use it to stop the connection gracefully
 ) -> Result<()> {
     log::info!("Received an XMPP connection from {socket_addr}");
@@ -170,12 +172,12 @@ async fn handle_socket(
     let mut buf_reader = BufReader::new(reader);
     let mut buf_writer = BufWriter::new(writer);
 
-    socket_force_tls(&mut buf_reader, &mut buf_writer, &mut reader_buf).await?;
+    socket_force_tls(&mut buf_reader, &mut buf_writer, &mut reader_buf, &hostname).await?;
 
     let mut config = tokio_rustls::rustls::ServerConfig::builder()
         .with_safe_defaults()
         .with_no_client_auth()
-        .with_single_cert(vec![config.cert.clone()], config.key.clone())?;
+        .with_single_cert(vec![cert_config.cert.clone()], cert_config.key.clone())?;
     config.key_log = Arc::new(tokio_rustls::rustls::KeyLogFile::new());
 
     log::debug!("Accepting TLS connection...");
@@ -185,7 +187,7 @@ async fn handle_socket(
 
     let (a, b) = tokio::io::split(new_stream);
     let mut xml_reader = NsReader::from_reader(BufReader::new(a));
-    let mut xml_writer = Writer::new(b);
+    let mut xml_writer = Writer::new(BufWriter::new(b));
 
     pin!(termination);
     select! {
@@ -194,7 +196,7 @@ async fn handle_socket(
             log::info!("Socket handling was terminated");
             return Ok(())
         },
-        authenticated = socket_auth(&mut xml_reader, &mut xml_writer, &mut reader_buf, &mut storage) => {
+        authenticated = socket_auth(&mut xml_reader, &mut xml_writer, &mut reader_buf, &mut storage, &hostname) => {
             match authenticated {
                 Ok(authenticated) => {
                     let mut connection = players.connect_to_player(authenticated.player_id.clone()).await;
@@ -205,6 +207,7 @@ async fn handle_socket(
                         &authenticated,
                         &mut connection,
                         &rooms,
+                        &hostname,
                     )
                     .await?;
                 },
@@ -216,7 +219,7 @@ async fn handle_socket(
     }
 
     let a = xml_reader.into_inner().into_inner();
-    let b = xml_writer.into_inner();
+    let b = xml_writer.into_inner().into_inner();
     a.unsplit(b).shutdown().await?;
     Ok(())
 }
@@ -225,17 +228,18 @@ async fn socket_force_tls(
     reader: &mut (impl AsyncBufRead + Unpin),
     writer: &mut (impl AsyncWrite + Unpin),
     reader_buf: &mut Vec<u8>,
+    hostname: &Str,
 ) -> Result<()> {
     use proto_xmpp::tls::*;
     let xml_reader = &mut NsReader::from_reader(reader);
     let xml_writer = &mut Writer::new(writer);
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     let event = Event::Decl(BytesDecl::new("1.0", None, None));
     xml_writer.write_event_async(event).await?;
     let msg = ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -260,13 +264,14 @@ async fn socket_auth(
     xml_writer: &mut Writer<(impl AsyncWrite + Unpin)>,
     reader_buf: &mut Vec<u8>,
     storage: &mut Storage,
+    hostname: &Str,
 ) -> Result<Authenticated> {
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     xml_writer.write_event_async(Event::Decl(BytesDecl::new("1.0", None, None))).await?;
     ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -284,6 +289,7 @@ async fn socket_auth(
 
     let auth: proto_xmpp::sasl::Auth = proto_xmpp::sasl::Auth::parse(xml_reader, reader_buf).await?;
     proto_xmpp::sasl::Success.write_xml(xml_writer).await?;
+    xml_writer.get_mut().flush().await?;
 
     match AuthBody::from_str(&auth.body) {
         Ok(logopass) => {
@@ -326,13 +332,14 @@ async fn socket_final(
     authenticated: &Authenticated,
     user_handle: &mut PlayerConnection,
     rooms: &RoomRegistry,
+    hostname: &Str,
 ) -> Result<()> {
-    read_xml_header(xml_reader, reader_buf).await?;
+    // TODO validate the server hostname received in the stream start
     let _ = ClientStreamStart::parse(xml_reader, reader_buf).await?;
 
     xml_writer.write_event_async(Event::Decl(BytesDecl::new("1.0", None, None))).await?;
     ServerStreamStart {
-        from: "localhost".into(),
+        from: hostname.to_string(),
         lang: "en".into(),
         id: uuid::Uuid::new_v4().to_string(),
         version: "1.0".into(),
@@ -358,6 +365,8 @@ async fn socket_final(
             user: authenticated,
             user_handle,
             rooms,
+            hostname: hostname.clone(),
+            hostname_rooms: format!("rooms.{}", hostname).into(),
         };
         let should_recreate_xml_future = select! {
             biased;
@@ -414,12 +423,14 @@ struct XmppConnection<'a> {
     user: &'a Authenticated,
     user_handle: &'a mut PlayerConnection,
     rooms: &'a RoomRegistry,
+    hostname: Str,
+    hostname_rooms: Str,
 }
 
 impl<'a> XmppConnection<'a> {
     async fn handle_packet(&mut self, output: &mut Vec<Event<'static>>, packet: ClientPacket) -> Result<bool> {
         let res = match packet {
-            proto::ClientPacket::Iq(iq) => {
+            ClientPacket::Iq(iq) => {
                 self.handle_iq(output, iq).await;
                 false
             }
@@ -427,11 +438,11 @@ impl<'a> XmppConnection<'a> {
                 self.handle_message(output, m).await?;
                 false
             }
-            proto::ClientPacket::Presence(p) => {
+            ClientPacket::Presence(p) => {
                 self.handle_presence(output, p).await?;
                 false
             }
-            proto::ClientPacket::StreamEnd => {
+            ClientPacket::StreamEnd => {
                 ServerStreamEnd.serialize(output);
                 true
             }
@@ -439,25 +450,3 @@ impl<'a> XmppConnection<'a> {
         Ok(res)
     }
 }
-
-async fn read_xml_header(
-    xml_reader: &mut NsReader<(impl AsyncBufRead + Unpin)>,
-    reader_buf: &mut Vec<u8>,
-) -> Result<()> {
-    if let Event::Decl(bytes) = xml_reader.read_event_into_async(reader_buf).await? {
-        // this is <?xml ...> header
-        if let Some(encoding) = bytes.encoding() {
-            let encoding = encoding?;
-            if &*encoding == b"UTF-8" {
-                Ok(())
-            } else {
-                Err(anyhow!("Unsupported encoding: {encoding:?}"))
-            }
-        } else {
-            // Err(fail("No XML encoding provided"))
-            Ok(())
-        }
-    } else {
-        Err(anyhow!("Expected XML header"))
-    }
-}

crates/projection-xmpp/src/message.rs

@@ -18,17 +18,17 @@ impl<'a> XmppConnection<'a> {
             resource: _,
         }) = m.to
         {
-            if server.0.as_ref() == "rooms.localhost" && m.r#type == MessageType::Groupchat {
+            if server.0.as_ref() == &*self.hostname_rooms && m.r#type == MessageType::Groupchat {
                 self.user_handle.send_message(RoomId::from(name.0.clone())?, m.body.clone().into()).await?;
                 Message::<()> {
                     to: Some(Jid {
                         name: Some(self.user.xmpp_name.clone()),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
                         resource: Some(self.user.xmpp_resource.clone()),
                     }),
                     from: Some(Jid {
                         name: Some(name),
-                        server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: Some(self.user.xmpp_muc_name.clone()),
                     }),
                     id: m.id,

crates/projection-xmpp/src/presence.rs

@@ -16,12 +16,12 @@ impl<'a> XmppConnection<'a> {
             Presence::<()> {
                 to: Some(Jid {
                     name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
+                    server: Server(self.hostname.clone()),
                     resource: Some(self.user.xmpp_resource.clone()),
                 }),
                 from: Some(Jid {
                     name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
+                    server: Server(self.hostname.clone()),
                     resource: Some(self.user.xmpp_resource.clone()),
                 }),
                 ..Default::default()
@@ -36,12 +36,12 @@ impl<'a> XmppConnection<'a> {
             Presence::<()> {
                 to: Some(Jid {
                     name: Some(self.user.xmpp_name.clone()),
-                    server: Server("localhost".into()),
+                    server: Server(self.hostname.clone()),
                     resource: Some(self.user.xmpp_resource.clone()),
                 }),
                 from: Some(Jid {
                     name: Some(name.clone()),
-                    server: Server("rooms.localhost".into()),
+                    server: Server(self.hostname_rooms.clone()),
                     resource: Some(self.user.xmpp_muc_name.clone()),
                 }),
                 ..Default::default()

crates/projection-xmpp/src/updates.rs

@@ -21,12 +21,12 @@ impl<'a> XmppConnection<'a> {
                 Message::<()> {
                     to: Some(Jid {
                         name: Some(self.user.xmpp_name.clone()),
-                        server: Server("localhost".into()),
+                        server: Server(self.hostname.clone()),
                         resource: Some(self.user.xmpp_resource.clone()),
                     }),
                     from: Some(Jid {
                         name: Some(Name(room_id.into_inner().into())),
-                        server: Server("rooms.localhost".into()),
+                        server: Server(self.hostname_rooms.clone()),
                         resource: Some(Resource(author_id.into_inner().into())),
                     }),
                     id: None,

crates/projection-xmpp/tests/lib.rs

@@ -187,6 +187,69 @@ async fn scenario_basic() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn scenario_basic_without_headers() -> Result<()> {
+    tracing_subscriber::fmt::try_init();
+    let config = ServerConfig {
+        listen_on: "127.0.0.1:0".parse().unwrap(),
+        cert: "tests/certs/xmpp.pem".parse().unwrap(),
+        key: "tests/certs/xmpp.key".parse().unwrap(),
+    };
+    let mut metrics = MetricsRegistry::new();
+    let mut storage = Storage::open(StorageConfig {
+        db_path: ":memory:".into(),
+    })
+    .await?;
+    let rooms = RoomRegistry::new(&mut metrics, storage.clone()).unwrap();
+    let players = PlayerRegistry::empty(rooms.clone(), &mut metrics).unwrap();
+    let server = launch(config, players, rooms, metrics, storage.clone()).await.unwrap();
+
+    // test scenario
+
+    storage.create_user("tester").await?;
+    storage.set_password("tester", "password").await?;
+
+    let mut stream = TcpStream::connect(server.addr).await?;
+    let mut s = TestScope::new(&mut stream);
+    tracing::info!("TCP connection established");
+
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"required"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"starttls"));
+    assert_matches!(s.next_xml_event().await?, Event::End(b) => assert_eq!(b.local_name().into_inner(), b"features"));
+    s.send(r#"<starttls/>"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Empty(b) => assert_eq!(b.local_name().into_inner(), b"proceed"));
+    let buffer = s.buffer;
+    tracing::info!("TLS feature negotiation complete");
+
+    let connector = TlsConnector::from(Arc::new(
+        ClientConfig::builder()
+            .with_safe_defaults()
+            .with_custom_certificate_verifier(Arc::new(IgnoreCertVerification))
+            .with_no_client_auth(),
+    ));
+    tracing::info!("Initiating TLS connection...");
+    let mut stream = connector.connect(ServerName::IpAddress(server.addr.ip()), stream).await?;
+    tracing::info!("TLS connection established");
+
+    let mut s = TestScopeTls::new(&mut stream, buffer);
+
+    s.send(r#"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="127.0.0.1" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace" xmlns="jabber:client" version="1.0">"#).await?;
+    assert_matches!(s.next_xml_event().await?, Event::Decl(_) => {});
+    assert_matches!(s.next_xml_event().await?, Event::Start(b) => assert_eq!(b.local_name().into_inner(), b"stream"));
+
+    stream.shutdown().await?;
+
+    // wrap up
+
+    server.terminate().await?;
+    Ok(())
+}
+
 #[tokio::test]
 async fn terminate_socket() -> Result<()> {
     tracing_subscriber::fmt::try_init();

crates/proto-irc/src/client.rs

@@ -49,7 +49,7 @@ pub enum ClientMessage {
     },
     Part {
         chan: Chan,
-        message: Str,
+        message: Option<Str>,
     },
     /// `PRIVMSG <target> :<msg>`
     PrivateMessage {
@@ -194,14 +194,20 @@ fn client_message_topic(input: &str) -> IResult<&str, ClientMessage> {
 fn client_message_part(input: &str) -> IResult<&str, ClientMessage> {
     let (input, _) = tag("PART ")(input)?;
     let (input, chan) = chan(input)?;
-    let (input, _) = tag(" ")(input)?;
+    let (input, t) = opt(tag(" "))(input)?;
+    match t {
+        Some(_) => (),
+        None => {
+            return Ok((input, ClientMessage::Part { chan, message: None }));
+        }
+    }
     let (input, r) = opt(tag(":"))(input)?;
     let (input, message) = match r {
         Some(_) => token(input)?,
         None => receiver(input)?,
     };
 
-    let message = message.into();
+    let message = Some(message.into());
     Ok((input, ClientMessage::Part { chan, message }))
 }
 
@@ -369,7 +375,18 @@ mod test {
         let input = "PART #chan :Pokasiki !!!";
         let expected = ClientMessage::Part {
             chan: Chan::Global("chan".into()),
-            message: "Pokasiki !!!".into(),
+            message: Some("Pokasiki !!!".into()),
+        };
+
+        let result = client_message(input);
+        assert_matches!(result, Ok(result) => assert_eq!(expected, result));
+    }
+    #[test]
+    fn test_client_message_part_empty() {
+        let input = "PART #chan";
+        let expected = ClientMessage::Part {
+            chan: Chan::Global("chan".into()),
+            message: None,
         };
 
         let result = client_message(input);

crates/proto-irc/src/server.rs

@@ -317,10 +317,15 @@ impl ServerMessageBody {
                 writer.write_all(b" = ").await?;
                 chan.write_async(writer).await?;
                 writer.write_all(b" :").await?;
-                for member in members {
+                {
+                    let member = &members.head;
                     writer.write_all(member.prefix.to_string().as_bytes()).await?;
                     writer.write_all(member.nick.as_bytes()).await?;
+                }
+                for member in &members.tail {
                     writer.write_all(b" ").await?;
+                    writer.write_all(member.prefix.to_string().as_bytes()).await?;
+                    writer.write_all(member.nick.as_bytes()).await?;
                 }
             }
             ServerMessageBody::N366NamesReplyEnd { client, chan } => {

crates/proto-xmpp/src/client.rs

@@ -255,6 +255,44 @@ impl MessageType {
     }
 }
 
+/// Error response to an IQ request.
+///
+/// https://xmpp.org/rfcs/rfc6120.html#stanzas-error
+pub struct IqError {
+    pub r#type: IqErrorType,
+}
+
+pub enum IqErrorType {
+    /// Retry after providing credentials
+    Auth,
+    /// Do not retry (the error cannot be remedied)
+    Cancel,
+    /// Proceed (the condition was only a warning)
+    Continue,
+    /// Retry after changing the data sent
+    Modify,
+    /// Retry after waiting (the error is temporary)
+    Wait,
+}
+impl IqErrorType {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            IqErrorType::Auth => "auth",
+            IqErrorType::Cancel => "cancel",
+            IqErrorType::Continue => "continue",
+            IqErrorType::Modify => "modify",
+            IqErrorType::Wait => "wait",
+        }
+    }
+}
+
+impl ToXml for IqError {
+    fn serialize(&self, events: &mut Vec<Event<'static>>) {
+        let bytes = BytesStart::new(format!(r#"error xmlns="{}" type="{}""#, XMLNS, self.r#type.as_str()));
+        events.push(Event::Empty(bytes));
+    }
+}
+
 #[derive(PartialEq, Eq, Debug)]
 pub struct Iq<T> {
     pub from: Option<String>,

crates/proto-xmpp/src/stream.rs

@@ -24,7 +24,17 @@ impl ClientStreamStart {
         reader: &mut NsReader<impl AsyncBufRead + Unpin>,
         buf: &mut Vec<u8>,
     ) -> Result<ClientStreamStart> {
-        let incoming = skip_text!(reader, buf);
+        let mut incoming = skip_text!(reader, buf);
+        if let Event::Decl(bytes) = incoming {
+            // this is <?xml ...> header
+            if let Some(encoding) = bytes.encoding() {
+                let encoding = encoding?;
+                if &*encoding != b"UTF-8" {
+                    return Err(anyhow!("Unsupported encoding: {encoding:?}"));
+                }
+            }
+            incoming = skip_text!(reader, buf);
+        }
         if let Event::Start(e) = incoming {
             let (ns, local) = reader.resolve_element(e.name());
             if ns != ResolveResult::Bound(Namespace(XMLNS.as_bytes())) {

docs/running.md

@@ -19,6 +19,7 @@ server_name = "irc.localhost"
 listen_on = "127.0.0.1:5222"
 cert = "./certs/xmpp.pem"
 key = "./certs/xmpp.key"
+hostname = "localhost"
 
 [storage]
 db_path = "db.sqlite"